Datasheet Texas Instruments SN74HC257DG4 — 数据表




       



 
  

SCLS224B -DECEMBER 1982 -REVISED SEPTEMBER 2003 15 LSTTL Loads D Low Power Consumption, 80-ВµA Max ICC
D ’HC257 . Typical tpd = 9 ns
SN54HC257, SN54HC258 . J PACKAGE
SN74HC257, SN74HC258 . D, N, NS, OR PW PACKAGE
(TOP VIEW)
1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 ’HC258 . Typical tpd = 12 ns
В±6-mA Output Drive at 5 V
Low Input Current of 1 ВµA Max
Provides Bus Interface from Multiple
Sources in High-Performance Systems
SN54HC257, SN54HC258 . FK PACKAGE
(TOP VIEW) VCC
G
4A
4B
4Y
3A
3B
3Y 1B
1Y
NC …